Abstract
We consider a communication network with a single source node, a single destination node, and N intermediate nodes. We propose efficient techniques to increase the spectral efficiency of cooperative multihop transmission. We analyze the minimum total transmit power needed to achieve a desired end-to-end outage probability for a given rate for several schemes. In the first scheme, incremental relaying, also known as hybrid ARQ, is embedded in the cooperative routing. In the second approach, we propose cooperative multihop communication with spatial reuse, in which interference is treated as noise. The performance of spatial reused scheme can be further improved by employing interference cancelation. Thus, an efficient interference cancelation for cooperative multihop networks is introduced when multiple antenna nodes are used.
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